Calculus Integral Functions

Question

Pumping stations deliver gasoline at the rate modeled by the function D, given by  with t measure in hours and and R(t) measured in gallons per hour. How much oil will the pumping stations deliver during the 3-hour period from t = 0 to t = 3? Give 3 decimal places.

Answer 1

It appears that the answer is simply the integral from 0 to 3 of D(t) although you have not defined R(t).

The integral can be obtained by integration by parts with u=t and dv=1/(1+2t) dt.